prezentare sistem amr › wp-content › uploads › 2018 › 10 › prezentare-si… · for three...
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AMR systemsCommunication technologies used by AEM
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Types of AMR systems
For three phased, industrial consumers
• Argus 3: meters are read via GSM/GPRS
For residential consumers and small businesses:
• Argus TS2: uses Turtle TS2 as a communication protocol
• Argus PLC: can read meters via current loop, band A PLC or RF
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AMR SYSTEM FOR INDUSTRIAL CONSUMERS
ARGUS 3
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ARGUS 3
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Communication channels
• GSM and GPRS
– Bidirectional communication channel, with very good coverage.
– Advantages:
• Mature technology, requires no cabling costs.
• In the case of GPRS, all meters and DCs are connected in a private network (VPN), increasing overall security.
– Disadvantages:
• Requires a monthly subscription with a GSM carrier
• Cost is relatively high, especially for GSM
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Features
• The system can be easily adapted to customer requirements
• Allows collecting data from a large amount of meters, both automatically, based on a preconfigured schedule, as well as manually, at the request of a system operator
• Offers centralized storage and communication: all data is stored in a central database (Microsoft SQL Server type)
• The system is interoperable and scalable, capable of collecting data from different types of meters
• Offers data exchange with different billing systems, based on customer requirements
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Features
• Data in the system can be aggregated and presented in the form of configurable reports:
– Balances
– Reports with indexes
– Event and power outage reports
– Load and voltage profile reports
• The system allows the automatic sending of reports via email
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AMR SYSTEM FOR RESIDENTIAL CONSUMERS – TURTLE TS2
ARGUS TS2
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TCUFiber optics
SPU
Injectiontransformer10/0,4kV
40/10kV
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SAP billing system
Command Center
5 bits/sOut
3 bits/hIn
CTs
Bidirectional communication
10/0,4kV
Measurement point
VPN GPRS
ARGUS TS2
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Communication channel
• Turtle TS2 (PLC)
− Communicates over great distances using power lines, including through LV to MV
transformers – ideal for rural areas
− Uses low frequencies for increased reliability
− Working frequency spectrum is between the 17th and 19th mains harmonics, where
noise is lower
− Uses FDMA technology (Frequency Division Multiple Access), allowing all endpoints
to communicate at the same time
− Communication is bidirectional
− Synchronized data transfer. Readings are performed at 00:00 for every meter, or on
demand
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Communication channel
• Turtle TS2 (PLC)
– Advantages
• Uses the existing infrastructure as a communication channel
• Data can go through the LV to MV transformer; the data concentrator is located
in the MV transformer substation
• Low sensitivity to noises in the mains line
• Does not require repeaters
– Disadvantages
• Low transmission speed; the load profile does not contain a lot of data (in
general, only the active energy is sent)
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Features
• Automatic Data collecting from a large number of meters based on a predefined schedule.
• Data is stored in a central Microsoft SQL Server database
• Customers can be disconnected and reconnected using Command Center
• Endpoint firmware can be upgraded remotely
• Billing information can be exported to SAP automatically
• The system allows generating short , medium, or long term forecast based on collected values.
• Several reports can be generated based on the collected data:
– Index reports
– Events reports
– Load profiles
– Balances
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Argus
Graphical comparison between customer average load profiles and the dynamic load profile of their chosen consumer type
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AMR SYSTEM FOR RESIDENTIAL CONSUMERS - PLC
ARGUS PLC
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System architecture
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Communication channels
• Current loop:– Advantages:
• Extremely low sensitivity to noise
– Disadvantages:
• The maximum distance between a meter and its DC is limited
• A DC can only have up to 32 meters allocated to it
• High initial cabling costs
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Communication channels
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• Band A PLC– Communication of the PLC modem is CENELEC EN 50065-1, band A (reserved for the
power distributor)
– Advantages
• Uses the existing infrastructure as a communication backbone
• Requires no additional cabling or communication costs
• Balances are easy to do because of the DCs mounted in the MV to LV transformer stations
– Disadvantages
• Old electronic equipment can introduce a ot of noise in the network
• Large distances between PLC modems can lead to the need for repeaters
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Communication channels
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• RF 868 MHz– Mesh radio, with self-configuration and automatic routing
– Advantages
• No cabling or communication costs
• A single Data Concentrator can handle a large number of meters (up to 4000 meters)
• High communication speeds (over 50 kb/s)
– Disadvantages
• Radio communication is susceptible to interference
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Features
• System suited for residential consumers and small businesses in direct connection
• PLC communication is used between the meter and the DC
• Allows connecting/disconnecting users remotely
• The following data is read:
– Self readings (billing data)
– Load profiles
– Instantaneous values
– Instrumentation values (voltages, currents, power factors)
– Events
• Allows acquisition of data from balance meters
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Features• The following reports can be generated:
– Synthetic and analitic balance reports
– Consumption analysis
– Connection/disconnection history
– Commands history
– Load profile reports
– Instrumentation values reports
– System events
– Integrated meters
– Graphical meter localization
• All reports can be saved as Excel or PDF files
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CONCLUSIONS
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Conclusions
Argus AMR systems offer:
• Bidirectional communication between the system operators and the equipment system
• Automated meter reading based on a predefined schedule
• Consumer Remote disconnection/reconnection
• Load profile reading and storing
• Tampering detection: open lid, magnetic field detection
• Events reading: power outages, low battery
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Conclusions
Argus AMR systems offer:
• Balance reports
• Various communication technologies using secured communication channels
• Data storage in meters, communication interfaces, DCs and the central system for adequate periods of time
• Clock synchronization for both meters and communication interfaces and DCs
• Remote firmware updates for DCs and communication interfaces
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THANK YOU
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